Microbiology MCQ Questions — Page 628

Question 1

A 28-year-old man with fever persisting for 3 weeks presented with tricuspid valve vegetation. The patient is an intravenous drug abuser. The most common cause of endocarditis in this patient is

Answer

Streptococcus viridans

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Staphylococcus aureus

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Enterococcus fecalis

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Pseudomonas

Question 2

Aac

Bab

Cad

Dbc

Question 3

AHuman

BSheep

CCat

DPig

Question 4

ADiarrhea

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Secondary Dissemination to liver

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Brain Abscess

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Colonic Diverticulosis

Question 5

Answer

Motile gram positive

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Motile gram negative

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Non-motile gram positive

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Non-motile gram negative

Question 6

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IgM nonreactive, IgG nonreactive

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IgM nonreactive, IgG reactive (low titer)

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IgM reactive (low titer), IgG reactive (high titer)

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IgM reactive (high titer), IgG reactive (high titer)

Question 7

Answer

Common cause of gas gangrene

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Nagler reaction positive

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Most common toxin is hyaluronidase

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Food poisoning of Clostridium perfringens produces heat resistant spores

Question 8

Answer

HSV encephalopathy is treated with acyclovir

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Oropharyngeal involvement is common in HSV - 1

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Recurrent genital involvement is seen in HSV -2

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Reccurance is rare in HSV - 1

Question 9

AMadurella

CNocardia

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Actinomycetoma

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Sporothrix